Razer Atheris scroll wheel issues

Razer Atheris that I bought close to two years ago, is having issues with the scroll function. Specifically, it doesn't seem to recognize which was is scroll up and which way is scroll down, leading to webpages jiggling up and down even if I'm only scrolling the wheel one way. I've tried it on two machines, both with synapse 3 installed. The scroll wheel button works fine, but the actual up and down of the scroll wheel is useless. If I bind scroll up and scroll down as the letters "u" and "d," respectively and scroll in a text box, it prints: uududduddduduududdudduuudud while only scrolling up. The same thing happens in the other direction. Any advice is appreciated.